If a wagon with a mass of 12g accelerates at a rate of 0.5m/s/s what was the bet force applied to it

Answer it is also known as the completion state is untrue of the activation complex;

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.